1 files changed, 3 insertions, 0 deletions
diff --git a/pk.h.in b/pk.h.in
index 7e95dd7..52246f9 100644
--- a/pk.h.in
+++ b/pk.h.in
@@ -305,6 +305,9 @@
 # ifndef PK_IMPL_EV
 #  define PK_IMPL_EV
 # endif
+# ifndef PK_IMPL_ITER
+#  define PK_IMPL_ITER
+# endif
 # ifndef PK_IMPL_ARR
 #  define PK_IMPL_ARR
 # endif